Water bottle cap



FIG. 1 is a front perspective view of a water bottle cap;

FIG. 2 is a top view of the water bottle cap of FIG. 1;

FIG. 3 is a bottom view of the water bottle cap of FIG. 1;

FIG. 4 is a front view of the water bottle cap of FIG. 1;

FIG. 5 is a back view of the water bottle cap of FIG. 1; and,

FIG. 6 is a right side view of the water bottle cap of FIG. 1, the leftside being a mirror image thereof.

The dot-dot-dash broken lines illustrate environmental structure andform no part of the claimed design. All other broken lines depictportions of the water bottle cap that form no part of the claimeddesign.

CLAIM The ornamental design for a water bottle cap, as shown anddescribed.